Interesting thought...

Seems some people are toying with the idea of putting a conventional warhead on our ICBMs (read about it here). Hmm... strike anywhere in the world in under an hour... I could see some scenarios where that might be helpful...

At the same time, the political considerations seem a bit dicey; after all, there is no way for someone who detects the launch to know whether or not we are just slamming some terrorists, or nuking someone.